Lower subscapular nerve
| Lower subscapular nerve | |
|---|---|
| File:Gray807.png Diagram of brachial plexus (label for lower subscapular nerve at bottom center) | |
| Details | |
| From | Posterior cord |
| Innervates | Subscapularis and teres major muscle |
| Identifiers | |
| Latin | nervus subscapularis inferior |
| TA98 | Lua error in Module:Wikidata at line 746: attempt to index field 'wikibase' (a nil value). |
| TH | {{#property:P1694}} |
| TE | {{#property:P1693}} |
| FMA | {{#property:P1402}} |
| Anatomical terms of neuroanatomy [[[d:Lua error in Module:Wikidata at line 865: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]] | |
The lower subscapular nerve, also known as the inferior subscapular nerve,[1] is the third branch of the posterior cord of the brachial plexus. It innervates the inferior portion of the subscapularis muscle and the teres major muscle.
Structure
[edit | edit source]The lower subscapular nerve contains axons from the ventral rami of the C5 and C6 cervical spinal nerves.[2][3] It is the third branch of the posterior cord of the brachial plexus.[4][5] It gives branches to 2 muscles:
- subscapularis muscle.[2] It usually gives 4 branches to innervate the subscapularis, and can give up to 8 branches.[1]
- teres major muscle.[2][3]
Function
[edit | edit source]The lower subscapular nerve innervates the subscapularis muscle and the teres major muscle.[2] These muscles medially rotate and adduct the humerus.[3]
Additional images
[edit | edit source]-
Brachial plexus
-
The right brachial plexus (infraclavicular portion) in the axillary fossa; viewed from below and in front.
-
Brachial plexus with courses of spinal nerves shown
References
[edit | edit source]Public domain This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
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